Feat/Currency Conversion

[mickey4653]

Bitnob API Integration

Overview

This PR implements a Node.js API service that integrates with the Bitnob API to provide currency conversion and exchange rate functionality. The implementation follows a clean architecture pattern with proper separation of concerns and robust error handling.

Features Implemented

1. Currency Conversion

• Endpoint: POST /api/currency/convert
• Converts between different currencies using Bitnob's exchange rates
• Input validation using Zod schema
• Supports conversion between any supported currency pairs

2. Exchange Rate Information

• Endpoint: GET /api/currency/rates
• Retrieves all available exchange rates from Bitnob
• Returns comprehensive rate information for all supported currencies

3. Specific Currency Rate

• Endpoint: GET /api/currency/rate/:currency
• Retrieves exchange rate information for a specific currency
• Supports any currency code supported by Bitnob

Technical Implementation Details

Architecture

• Follows MVC pattern with clear separation of concerns:
  • Controllers: Handle request/response logic
  • Services: Implement business logic and API integration
  • Routes: Define API endpoints and routing

Key Components

Currency Service

• Implements Bitnob API integration
• Handles all currency-related operations
• Includes comprehensive error handling and logging
• Uses Axios for HTTP requests

Input Validation

• Implements Zod schema validation
• Validates currency codes and amounts
• Provides detailed error messages

Error Handling

• Global error handling middleware
• Detailed error responses
• Proper HTTP status codes
• Comprehensive error logging

Dependencies

• Express.js for API framework
• Axios for HTTP requests
• Zod for input validation
• Dotenv for environment configuration
• Jest for testing
• ESLint for code quality

Testing

• Jest configuration set up
• Test directory structure in place
• Ready for implementing unit and integration tests

Security

• API key management through environment variables
• Input validation and sanitization
• Proper error handling to prevent information leakage

Documentation

• Clear code comments
• README.md with setup instructions
• API endpoint documentation

[ngodi]

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